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ISSUES-1885 fix signed problem

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This commit is contained in:
zhang2014 2018-02-13 13:46:16 +08:00
parent acb5b99195
commit 0d8730c687
1 changed files with 8 additions and 7 deletions
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15
dbms/src/Common/UTF8Helpers.h
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@ -63,10 +63,10 @@ inline size_t countCodePoints(const UInt8 * data, size_t size)
const auto src_end_sse = (data + size) - (size % bytes_sse);
const auto one_sse = _mm_set1_epi8(1);
const auto zero_sse = _mm_set1_epi8(0);
const auto zero_sse = _mm_setzero_si128();
const auto align_sse = _mm_set1_epi8(0xFF - 0xC0 + 1);
const auto upper_bound = _mm_set1_epi8(0x7F + (0xFF - 0xC0 + 1) + 1);
const auto align_sse = _mm_set1_epi8(0x40);
const auto upper_bound = _mm_set1_epi8(0xBF);
for (; data < src_end_sse;)
{
@ -77,11 +77,12 @@ inline size_t countCodePoints(const UInt8 * data, size_t size)
const auto chars = _mm_loadu_si128(reinterpret_cast<const __m128i *>(data));
///Align to zero for the solve two case
const auto align_res = _mm_add_epi8(chars, align_sse);
///Because _mm_cmmpgt_epid8 return 0xFF if true
const auto choose_res = _mm_blendv_epi8(zero_sse, one_sse, _mm_cmpgt_epi8(align_res, upper_bound));
const auto align_res = _mm_adds_epu8(chars, align_sse);
const auto less_than_and_equals = _mm_cmpeq_epi8(_mm_min_epu8(align_res, upper_bound), align_res);
///Because _mm_cmpeq_epi8 return 0xFF if true
const auto choose_res = _mm_blendv_epi8(zero_sse, one_sse, less_than_and_equals);
sse_res = _mm_add_epi8(sse_res, choose_res);
sse_res = _mm_adds_epu8(sse_res, choose_res);
}
UInt16 mem_res[8] = {0};